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Updated: Mar 24, 2026
07:26
Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
Published on: November 21, 2013
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Fast and Slow Signal Propagation in Abiotic Polypeptide Assemblies.
Panagiotis Mougkogiannis1, Andrew Adamatzky1
1Unconventional Computing Laboratory, University of the West of England, Bristol, UK.
Chembiochem : a European Journal of Chemical Biology
|March 23, 2026
Summary
Proteinoid microspheres, formed from amino acids without genetic material, show spontaneous electrical activity and structural variations. Their electrical properties depend on composition, offering insights into early life and bioinspired computing.
Area of Science:
- * Origin of Life Research
- * Materials Science
- * Bio-inspired Computing
Background:
- * Proteinoid microspheres, formed by thermal polymerization of amino acids, exhibit electrical potential fluctuations.
- * These abiotic structures lack genetic material, membranes, or ion channels, yet display complex electrical dynamics.
- * Understanding their electrical and structural properties is key to exploring prebiotic organization and novel materials.
Purpose of the Study:
- * To quantify the electrical and structural dynamics of proteinoid microspheres with varying compositions.
- * To investigate the relationship between proteinoid composition, structure, and electrical behavior.
- * To develop a quantitative framework for characterizing emergent electrical dynamics in abiotic networks.
Main Methods:
- * Multi-electrode differential recordings to measure electrical potential fluctuations.
- * High-resolution electron microscopy to analyze microsphere morphology.
- * Algorithmic complexity, spatial coherence, and graph-theoretical metrics for dynamic characterization.
Main Results:
- * Proteinoid assemblies exhibit rapid voltage oscillations (<1 min) and long-timescale drifts (hours to days).
- * Spatially separated electrodes show correlated potential shifts, indicating composition-dependent electrical coupling.
- * Optical stimulation elicits reproducible voltage responses, demonstrating pathway modulation.
- * Single-amino-acid systems form uniform spheres, while mixed compositions yield diverse structures (hollow, lamellar, crystalline) with unique electrical signatures.
Conclusions:
- * Proteinoid microsphere electrical properties are intrinsically linked to their amino acid composition and resulting structure.
- * These abiotic assemblies display emergent electrical dynamics and responsiveness to external stimuli.
- * Findings provide insights into prebiotic chemical evolution and potential applications in bio-inspired computing materials.
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